Thermostatic temperature-regulator for glue-heaters.



H. ANGEBEANDT, J11. THERMQSTATIG TEMPERATURE REGULATOR FOR GLUE HBATER3.

APPLICATION FILED Anejzs, 1910.

1,007,172. Patented Oct. 31, 191.

2 SHEETSSHEET 1.

y" v fig I 2. iii Ea a v imam/1oz UNITED STATES] 4 PATENT 0 K E' man! sues-Baum, m; or TOLEDO, om. rnnnuos'rmro TEMPERATURE-REGULATOR ron GLUE-HEATERS.

This invention relates to improvements in I thermostatic temperature regulators for glue heaters;

One object of the invention is to provide an improved directacting thermostat adapted to be applied to a glue heater whereby the tern erature of the heating fluid is automatlcally controlled.

Another object is to provide a thermostat which will operate and automatically control itself under steam pressure and which is provided with a valve that cannot become clogged under any steam heating conditions. With the above andother objects in view, the invention consists of certain novel features of construction, combination and arfrom the tank; Fig. 4 is an enlarged vertical section of the thermostat and the steam supply valve controlled thereby; Fig. 5 is a similar View at right angles to and on the line 55 of Fig. 4; Fig. 6 is a top plan view of the valve and its operating lever showing the indicating device for the thermostat ad justing mechanism.

Referring more particularly to the drawings, 1 denotes the glue heating tank Wl'llCll may be of the usual or any desired construction and is here shown as comprising an inner glue receptacle 2 and an outer steam and water receptacle 3. To the lower portion of the outer or water receptacleofthe tank is connected a steam supply pipe 5 the inner end of which enters thelower portion of the water space of the tank. The steam supply pipe :iis preferably extended up- Specification of Letters Patent. A pplication filed August 25, 1910. Serial No. 578,858.

Patented Oct. 31, 1911.

wardly from its connection with the tank to a point adjacent to the upper end thereof "at which point the steam supply pipe 5-projec-t-s horizontally and has arranged therein the casing 6 of an automatic steam'controlling valve 7. Inthe steam pi )e 5 is also arranged a manually operated cut off valve-8. In the lower portion of the valve casing 6 is formed a steam inlet chamber 9 which is closed at its lower end by a screw cap 9. With the chamber 9 of the valve casing is connected one section of a steam supply pipe while the opposite section thereof is con-. nected to the u per portion or' discharge chamber 10 of t e valve'casing as clearly shown in Fig. 5 of the drawing. In the valve 7 are formed steam inlet, ports lland steam discharge ports 12 throu h'which the steam passes from. the inlet camber 9. to

the discharge chamber 10 of the valve cas-' ing. The valve 7 is provided on its upper end with *an upwardly projecting guide stem 13 which extends through a suitable stufiing box arranged in the upper end of the valve casing as shown. On the lower end of. the valve is formed a downwardly projecting stud 15 around which and betweenthe lower end of the valve and the inner endof the.-

the inner end of which is formed a socket 18 which is adapted to enga ev an upwardly projecting nipple 19 tonne on the upper end of the outer rece tacle of the glue tank as shown. In the end of the arm 17 having the socket 18 is arranged a threaded passage 20 in which is screwed the upper end of a tubular thermostat 21 which projects downwardly into the water space between the glue and water receptacles of the tank as shown. I closed by a suitable closing-disk 22 arranged therein as shown. Arranged in the thermostat tube 21 is a non-expanding r celain inner rod 23 the lower 'ehdof w ich rests on the disk 22, while on 'thfeupper end thereof within the upper portion of the outer tube 21'is arranged a metal bearing block 24. V a

Pivotally mounted in a bearing brachi 25 on the upper end of the arm 17 1s a The lower end of the tube 21 is the screw has been turne operating lever 26 one end of which engages the upper "end of the valve stem 13, while in the ot er end is arranged an adjustable thermostat engaging screw 27'by means of -which the movement of the valve 7 by the thermostat may be regulated. On the screw ,27 is arranged a jam-nut 28 whichis adapted' to be screwed into engagemntwith the iever to rigidly hold the screwin its ad-' justed position. j

On, the pivoted end'of the lever 26 is formed a Segmental index plate 29 on which is arranged an indicating scale '30 with which there is adapted to coact an indicating finger or pointer 31 carried by the ad just-ing screw whereby. the osition to which d and the corresponding distance to which the valve is permitted to open will be indicated.

In the operation of the device the screw 27 is adjusted to a position for holding the valve open-to the desired extent for admltting steainto the glue tank. When the water n the outer receptacle of the tank has become thus heated to the desired or predetermined temperature the thermostat tube 21 will expand thus allowing the'porcelain inner-rod to move downwardly under pressure of the steam on the under side of the valve 7 in conjunction with the pressure exerted by'the spring 16 through the valve, lever 26, and screw 27 which will permit 5 said spring to close the valve. thus cutting 7 off the supply of steam to he glue tank until the water therein has cooled to a suflicient extent to again cause the contraction of the thermostat tube whereupon the porcelain rod 23 will againbe forced upwardly,

thus rocking the lever 26 and causing the same to again open the valve which will admit a further supply of steam thus automatically maintaining the water in the tank at a certain temperature which may be determined by the adjusting screw 27 and indicated b the pointer or indicating finger .31 cards by the screw.

From the foregoing description taken in 7 connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without v departing from the principle or sacrificing any of the advantages of the invention as defined in the appended claim;

Having thus I claim is:

In combination having ;a surrounding heating space, of an arm projecting from the top of the tank, a thermostat secured to one end of said arm andsupporting the latter, said thermostat comprising an expanding tube depending 'into the heating space and having a closed with a glue receiving tank bottom, a non-expanding rod slidably located within the tube, a block movable within the tube and resting upon the upperv end of the rod, a lever fulcrumed'on said arm, an adjustingscrew carriedby the short' arm of the lever'the lower end of which contacts with the "upper projectingend of the block, means carried by the said adjusting1 screw and cooperating with a scale arrange on said end of-the lever whereby the position to which the screw has been turned is indicated,*a spring actuated valve located in the opposite end of the arm, a stem forming apart of, the valve and projecting above the arm and adapted to contact with the free end of the long arm of the lever, and pipe connections leading from the valve and communicating with the heating space .below the glue tank.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses;

HUBERT ANGEBRANDT, JR.

Witnesses:

DANIEL HOFFMAN, NINA E. TURNER. 

